The MrmFetchWidgetOverride function is the extended version of MrmFetchWidget. It is identical to MrmFetchWidget, except that it allows the caller to override the widget's name and any arguments that MrmFetchWidget would otherwise retrieve from the UID file or one of the defaulting mechanisms. That is, the override argument list is not limited to those arguments in the UID file.

The override arguments apply only to the widget fetched and returned by this function. Its children (subtree) do not receive any override parameters.